hello, i have an 8 year old little boy who has behavior problems at home and in school and everywhere in public. lots of concern from school teacher every year since kindergarted such as grades going up and down, not sitting still, can t focus, refusing to read, write, ect. mind is always on something else when it comes to doing something constructive and homework is always a fight. He gets angry very quick and over the smallest things. i have learned to pick my battles. recently he got so mad he bit his arm and dug his fingernails in his arm as well! What could be going on?